[Tex/LaTex] Placing one figure per page in appendix of figures

Question

I would like to place one figure per page in my appendix of figures.

Currently I do this with

{\centering

\vfill
\includegraphics[]{Appendix/S1.pdf}
\captionof{figure}{caption}
\label{S1}
\vfill
}

I can fit about two per page. Most of these will have lengthy captions, and so I will need to do one per page. How can I place the figure dead centre with one figure per page?

Answer 1

While vertical centering is the default for [p]. it does not guarantee only one figure per page. Also, \vfill does nothing unless the height is previously set.

\documentclass{article}
\usepackage{mwe}% MWE tools
\begin{document}

\begin{figure}[p]
\parbox[c][\textheight][c]{\textwidth}%
{\centering
\includegraphics[]{example-image}
\caption{\blindtext}
\label{S1}
}
\end{figure}

\end{document}